Parallel Browser MCP

io.github.etairl/parallel-browser-mcpv0.1.14Browser Automation

MCP server for parallel browser automation across multiple providers.

In-path gate · all MCP tools

Using Parallel Browser MCP in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: STALEfresh until 2026-07-01 10:00 UTC

screened 2026-06-01tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“No malicious instructions”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- Past its expiry date - awaiting re-screen

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-04).

Contracts can change after screening, with no version bump. The gate pins Parallel Browser MCP’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-etairl-parallel-browser-mcp)](https://mcpindex.ai/server/io-github-etairl-parallel-browser-mcp)

HTML

<a href="https://mcpindex.ai/server/io-github-etairl-parallel-browser-mcp"><img src="https://mcpindex.ai/api/v1/badge/io-github-etairl-parallel-browser-mcp" alt="mcpindex verdict" height="20" /></a>

Environment variables

BROWSER_MCP_CONFIG

Inline JSON configuration for providers and defaults. See README for shape.

BROWSER_MCP_CONFIG_PATH

Path to a JSON file with provider configuration.

BROWSERBASE_API_KEY

secret

Browserbase API key (required when using the browserbase provider).

BROWSERBASE_PROJECT_ID

Browserbase project ID (required when using the browserbase provider, unless set in config).

ANCHOR_API_KEY

secret

Anchor Browser API key (required when using the anchor provider).

CLOUDFLARE_API_TOKEN

secret

Cloudflare API token (required when using the cloudflare provider).

CLOUDFLARE_ACCOUNT_ID

Cloudflare account ID (required when using the cloudflare provider).

PLAYWRIGHT_USE_CLOAKBROWSER

Set to 'true' to launch the local Playwright provider via CloakBrowser (https://cloakbrowser.dev/) stealth Chromium. Requires installing the optional 'cloakbrowser' npm package.

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

Alternatives in Browser Automation

Busymate DevTools

dev.busymate/busymate-devtools

Capture, inspect & debug HTTPS traffic across iOS, Android, browsers & backends — 304 MCP tools.

CloakBrowser MCP

io.github.swimmwatch/cloakbrowser-mcp

Playwright MCP-compatible browser automation bridge for CloakBrowser Chromium.

io.github.extensiondev/mcp

Build, run, inspect, and publish browser extensions from any MCP client. 28 tools, 11 browsers.

Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "parallel-browser-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "parallel-browser-mcp"
      ],
      "env": {
        "BROWSER_MCP_CONFIG": "<browser_mcp_config>",
        "BROWSER_MCP_CONFIG_PATH": "<browser_mcp_config_path>",
        "BROWSERBASE_API_KEY": "<your-browserbase_api_key>",
        "BROWSERBASE_PROJECT_ID": "<browserbase_project_id>",
        "ANCHOR_API_KEY": "<your-anchor_api_key>",
        "CLOUDFLARE_API_TOKEN": "<your-cloudflare_api_token>",
        "CLOUDFLARE_ACCOUNT_ID": "<cloudflare_account_id>",
        "PLAYWRIGHT_USE_CLOAKBROWSER": "<playwright_use_cloakbrowser>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "parallel-browser-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "parallel-browser-mcp"
      ],
      "env": {
        "BROWSER_MCP_CONFIG": "<browser_mcp_config>",
        "BROWSER_MCP_CONFIG_PATH": "<browser_mcp_config_path>",
        "BROWSERBASE_API_KEY": "<your-browserbase_api_key>",
        "BROWSERBASE_PROJECT_ID": "<browserbase_project_id>",
        "ANCHOR_API_KEY": "<your-anchor_api_key>",
        "CLOUDFLARE_API_TOKEN": "<your-cloudflare_api_token>",
        "CLOUDFLARE_ACCOUNT_ID": "<cloudflare_account_id>",
        "PLAYWRIGHT_USE_CLOAKBROWSER": "<playwright_use_cloakbrowser>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- parallel-browser-mcp

Claude Code (claude mcp add)

claude mcp add --scope user parallel-browser-mcp -- npx -y -- parallel-browser-mcp

Gemini CLI (gemini mcp add)

gemini mcp add -s user parallel-browser-mcp npx -y -- parallel-browser-mcp

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-etairl-parallel-browser-mcp

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.1.14
category: Browser Automation
verdict expires: 2026-07-01
quality: 82 / 100
operator: etairl

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 960,824). Verify it yourself.

Links

Repository →